/*
 * Copyright 2011 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.errorprone.bugpatterns;

import java.util.ArrayList;
import java.util.List;

/**
 * @author scottjohnson@google.com (Scott Johnson)
 */
public class ModifyingCollectionWithItselfPositiveCases {
  
  List<Integer> a = new ArrayList<Integer>();
  List<Integer> c = new ArrayList<Integer>();
  
  public boolean addAll(List<Integer> b) {
    //BUG: Suggestion includes "a.addAll(b)"
    return this.a.addAll(a);
  }
  
  public boolean removeAll(List<Integer> b) {
    //BUG: Suggestion includes "a.containsAll(b)"
    return this.a.containsAll(this.a);
  }
  
  public boolean retainAll(List<Integer> a) {
    //BUG: Suggestion includes "this.a.retainAll(a)"
    return a.retainAll(a);
  }
  
  public boolean containsAll() {
    //BUG: Suggestion includes "a.clear()"
    return this.a.removeAll(a);
  }
}
